Borrowing it
Nothing to install: this file belongs to desteny-dev/pc-screen-control. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/desteny-dev/pc-screen-control/main/.github/copilot-instructions.mdgit clone --depth 1 https://github.com/desteny-dev/pc-screen-controlWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/instructions/desteny-dev/pc-screen-control/copilot-instructions)<a href="https://agentmods.dev/instructions/desteny-dev/pc-screen-control/copilot-instructions"><img src="https://agentmods.dev/badge/instructions/desteny-dev/pc-screen-control/copilot-instructions/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/instructions/desteny-dev/pc-screen-control/copilot-instructions"><img src="https://agentmods.dev/badge/instructions/desteny-dev/pc-screen-control/copilot-instructions.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.04904 | $0.04904 |
| Opus 5.5 | $0.01962 | $0.01962 |
| Sonnet 5.5 | $0.00981 | $0.00981 |
| Haiku 4.5 | $0.00490 | $0.00490 |
Grade A, and why
pc-screen-control copilot-instructions.md scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2mo ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 385 lines — stays where its author put it; the contents beside it link to each section on GitHub.
PC Screen Control — where this is going
Written by the maintainer. Read this before proposing changes.
Start here
Current state: v1.7.0 is released. 34 tools, 19 test files in CI on Python
3.9 / 3.11 / 3.13, all green. Two packages ship: pc-screen-control.mcpb, a
one-click first install for Claude Desktop, and pc-screen-control-setup.zip
with INSTALL.bat, which registers every MCP client it finds — Claude Desktop,
the Store build, Claude Code and Codex — and is the only route that still works
once Claude has blocked extension installs. Same server inside both.
Three releases in a row came from the same place: what the guard protects and what a person actually loses were not the same list.
1.3.0 — the guard knew whether the screen had moved, but not whether the
foreground was still the window the assistant had declared. After a block
ended mid-task those were the same answer, and a command meant for a terminal
was typed into somebody's chat. The declared window is tracked separately now,
taken from the call itself so no tool can forget it
(tests/test_wrong_window.py).
1.3.1 — the check and the send cannot be one instruction. Seen once live: the
check passed honestly and the keys landed elsewhere a fraction of a second
later. Cannot be prevented; the silence after it can. send_keys reports
off_target naming both windows.
1.3.2 — the person's own window could be closed, parked out of reach or
minimised, because no tool knew which window they were sitting in; a
window_title matching theirs instead of ours was the whole distance. It is
now refused, an ambiguous title is refused rather than guessed for anything
destructive, Alt+F4/Ctrl+W without a ref is refused, and a foreground that
did not come back is reported on the next call whatever tool that is
(tests/test_user_window.py).
1.3.3 — and then a live test of 1.3.2 showed the sharpest version of the same
mistake: the release measured whether it had given the screen back, wrote the
result into _RUECKGABE, and nothing ever read it. A comment said tools
copy it into their reply; none did. set_guard block:'end' now returns
handed_back, including in_front_now — what is actually in front, measured
after the restore, as opposed to whether the call returned true.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 2mo ago First seen · 385 lines · 4,904 tokens per session scan A d37bae26af0c
pc-screen-control copilot-instructions.md is an instructions file published in the GitHub repository desteny-dev/pc-screen-control (2 stars, last pushed 3mo ago), licensed MIT. It adds 4,904 tokens to every session, about $0.0196 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
pc-screen-control copilot-instructions.md compared with instructions from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| pc-screen-control copilot-instructions.mddesteny-dev/pc-screen-control | Instructions file | 2 | 3mo ago | MIT | A | 4,904 | GitHub Copilot |
| vscode buildNext.instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 9,719 | GitHub Copilot |
| next.js AGENTS.mdvercel/next.js | Instructions file | 143k | today | MIT | A | 7,461 | Codex, OpenCode |
| langchain AGENTS.mdlangchain-ai/langchain | Instructions file | 149k | yesterday | MIT | A | 4,680 | Codex, OpenCode |
| vscode oss-third-party-notices.instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 5,516 | GitHub Copilot |
| vscode copilot-instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 3,093 | GitHub Copilot |
| deepseek-harness AGENTS.mddeepseek-ai/deepseek-harness | Instructions file | 274k | 2d ago | MIT | A | 4,313 | Codex, OpenCode |